Shuttle



Feb. 26, 1929.

W. L. POTTER SHUTTLE Filed May 31, 1928 NH L INVENTOR W0 \Terlxoi Ter ,4 TTURNEY WITNESS Patented Feb. 26, 1929.

UNITED STATES P'i'ENT GFFICEQ WALTER L. POTTER, OF PATERSON, NEW JERSEY, ASSIGNOB TO PATERSON REED & HARNESS 00., OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SHUTTLE.

Application filed May 31, 1928. Serial No. 281,889.

In a shuttle of a well-known type the spindle cavity is extended at one end to form an underneath chamber closedat the top and this chamber is traversed by the pins which in part afford a fulcrun'i for and a stop to limit the downward movement of the spindle and in part support the rebent spring which is active mainly to keep the spindle depressed against the stop. In previous shuttles of this type the pins work out when the shuttle is in use and hence it has been proposed to drive them all in so tightly that they cannot work out with the exception of the one forming the fulcrum for the spindle, which one it was proposed to hold against working out by the frictional resistance of the spindle thereoncaused by the pressure of the spring; but if this was a plain pin it was found that the frictional resistance was not enough for the purpose, and in fact that the pivotal movement of the spindle would act to loosen it, and if it was a screw it was found that if the frictional resistance was sufiicient to keep it from working out it was so great that it could not be removed without frequently twisting it off.

'I have produced and herein set forth a shuttle constructed so that the spindle can be readily removed and yet none of the pins required can work out accidentally.

In the drawing,

Fig. 1 is a plan of a fragment of the improved shuttle;

Fig. 2 is a view mainly in longitudinal section with the spindle in normal position; and

Fig. 3 is a similar View showing the spindle in the act of removal.

1 is the shuttle body formed as usual with the filling cavity 2 open top and bottom and at one end of such cavity with an underneath chamber 8 which is closed at the top by a wall l of the shuttle body.

In mortises, as usual, in the sides of the chamber are seated clips 5 which may if required be hook-shaped at their ends so as to catch in the annular groove at the butt of the quill forming the package core to hold it against longitudinal displacement on the uill. q Traversing horizontally the chamber and these clips are two pairs of pins, 67 and 8-9 arranged in parallel inclined planes with each pin 6 and 8 the higher in the pair and the nearer to the adjoining end ofthe body;

the pins 6, 7 and 8 are as usual arranged under the overhang or wall l.

On the pin 8 is fulcrumed the butt of the spindle 10 between the clips. For this purpose said butt is formed with an upwardly open hook 11. The spindle may swing on its fulcrum from the depressed position (full lines,.Fig. 2) to the raised position (dotted lines, Fig. 2), pin 9 forming a stop for the first movement and the end of wall 4 a stop for the second.

The spring 12 is of the usual form, being a rebent piece of spring metal as steel, having an upper long arm and a lower shorter arm. It receives pin 6 in its bend and rests with its short arm bearing on and below the pin 6 and on and above pin 7, and said short arm may as shown be bent around or formed with a hook 12 engaged with pin 7 the long arm of the spring further bears under and against the heel of the spindle butt, thus keeping it up to its fulcrum.

The spindle is removable by turning it to substantially the position shown in Fig. 3, then shifting it toward stop 9 clear of its fulcrum 8 and then withdrawing it lengthwise from between such stop and pin 8, which are spaced greater than thevtransverse extent of the butt across its hook.

So that the pressure of the spring may be removed at this time and so that there shall not be encountered in the use of the shuttle the working out of its pins, all the pins, excepting pin 7, are driven into the shuttle with such a tight fit that they cannot work out (which it is known possible if they are not disturbed), but pin 7 is driven in with a lit permitting its ren'ioval, preferably by. forming it as a screw' as shown in F l and with a screw-slotted head 7 a to receive a screw as shown in Fig. 3.

I It will be seen that the key pin is not according to 'my construction subject to the Of course, when pin 7 has frictional ction, and hence to turning and loosening of the spindle in raising and lowering it.

Aside from the foregoing. which is concorned with more or less details of my constructioiu so far as I am aware it is new to provide with a shuttle body having a spindle cavity, a spindle :tulcrumed to move up and down in the cavity on a transverse axis and having its buttformed s an upwardly open hook, a tra:sverse fulcrum device as pin 8, receiving such hook, spring means normally holding the hook ot the spindle engaged with sa d device and a stop to limit the downw rd pivotal movement of the spindle, said stop being spaced from said device that on eh vatine' the spindle and shitting it transve sely of itself toward the stop tic spii'ldle may be withdrawn lengthwise of itsel't from the shuttle body.

Having thus fully described my invention, what I claim is:

1. in con'ibination, with a shuttle body having a spindle cavity, a spindle tulcrumed to move up and down in the cavity ona transverse axis and having its but;- termed :1 an upwardly open hook, a transverse fulcrum device received by such hook, spring means normally holding the hook ot the spindle engaged with said device, and stop to limit the 'dowlnvar-d pivotal movement oi the spindle, said stop being so spaced from said de vice that on elevating the spindle and shift ingit transversely oi itself toward the stop the spindle may be withdrawn lengthwise 01 itself from the shuttle body.

In combination, a shuttle body having a spindle cavity and an underneath chamber forming an endwise extension of the cavity and means extending toward the cavity over the chamber forming a top for the chamber, a spindle in the cavity having its but-t extending into said chamber and having under said means an upwardly open hook a fulcrum pin traversing the chamber horizontally and received by the recess of said hook, a stop to limit the downward movement of the spindle on said fulcrum pin, a rebent spring in said chamber having an upper arm engaged underneath with the spindle butt and a lower arm, and a pair of pins traversing the chamber horizontally and one engaged underneath and with the lower spring arm and the other with said lower arm above it and nearer its fulcrum, said spindle hook. on elevation of the spindle from the stop being withdrawable upwardly an d endwise from between the stop and the fulcrum pin the latter of the pair of pins being enuuise removable 't'rom the body.

in combinatirm, a shuttle body lim'iue a spindle cavity and an underneath chamber termin an ciidwise extension of the cavity and means extending toward the cavity over the cha nber "forming a top tor the chamber a spindle in the cavity having its butt extending into salt. chamber and having under d means an upwardly open hook, a tulcruui pin treversing the chamber horizontally and received by the recess oi said book, a stop to limit the downward movement of the spi die on said fulcrum pin. a re'bent spring in said chain having an upper arm engaged underneath with the spindle butt and 2. lower arm, and a pair ot'pins traversing; the chamber horizontally and one on gagged underneath and with the lower spring arm and the other with said lower arn. above it and nearer its fulcrum, said spindle hook,

ILL

on elevation of the spindle from the ste n bewithdrawable upwardly and endwise from between the stop and the fulcrum pin and the latter oi the pair or pins being a screw endwise removable from the body.

in testimony whereof I a'tiix my signature.

iVAl/lll llwi L. POTTER. 

